Cameroon is an African country bordering Republic of Congo, Gabon, Equatorial Guinea, the Gulf of Guinea, Nigeria, Chad, and Central African Republic. While English and French are the offical languages of Cameroon, most emcess rap in French.

other sites:
a video chronicling the Cameroon Hip Hop Awards.
a not very informative post from AfricanHipHop.com.

artists:
Manhitoo (Myspace page) helped to form the Hip Hop scene in Cameroon in the late 1980s and is a member of the group Doi Hope. Here's a bio about him.
Negrissim (Myspace page) is a group that formed in 1995 and has 3 emcees, 1 DJ and 2 more featured DJs. They're now based in Senegal.
Williman (Myspace page) now resides in Switzerland.
Tigritude (Myspace page) is a group of 4 members.
Boudor (Myspace page) has been a solo emcee since the late 1980s.
Nest (Myspace page) resides in Switzerland.
H2zo (Myspace page) also lives in Switzerland.

If you've got any more info, lemme know- send me a message.